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As you can see, the following messes up the MathAction display. The error goes away if we
- set algebra display on and tex display of, or
- display only the first element of the list
fricas l := [1, 1, 1+q, 1+q+q^2, 1+q+q^2+q^3+q^4, 1+q+q^2+q^3+2*q^4+q^5+q^6, 1+q+q^2+q^3+2*q^4+2*q^5+2*q^6+q^7+q^8+q^9, (1+q^4+q^6)*(1+q+q^2+q^3+q^4+q^5+q^6), (1+q^4)*(1+q+q^2+q^3+q^4+q^5+2*q^6+2*q^7+2*q^8+2*q^9+q^10+q^11+q^12)]
\begin{equation*}
\label{eq1}\begin{array}{@{}l}
\displaystyle
\left[ 1, \: 1, \:{q + 1}, \:{{{q}^{2}}+ q + 1}, \:{{{q}^{4}}+{{q}^{3}}+{{q}^{2}}+ q + 1}, \: \right.
\
\
\displaystyle
\left.{{{q}^{6}}+{{q}^{5}}+{2 \ {{q}^{4}}}+{{q}^{3}}+{{q}^{2}}+ q + 1}, \: \right.
\
\
\displaystyle
\left.{{{q}^{9}}+{{q}^{8}}+{{q}^{7}}+{2 \ {{q}^{6}}}+{2 \ {{q}^{5}}}+{2 \ {{q}^{4}}}+{{q}^{3}}+{{q}^{2}}+ q + 1}, \: \right.
\
\
\displaystyle
\left.{
\begin{array}{@{}l}
\displaystyle
{{q}^{12}}+{{q}^{11}}+{2 \ {{q}^{10}}}+{2 \ {{q}^{9}}}+{2 \ {{q}^{8}}}+{2 \ {{q}^{7}}}+{3 \ {{q}^{6}}}+{2 \ {{q}^{5}}}+{2 \ {{q}^{4}}}+
\
\
\displaystyle
{{q}^{3}}+{{q}^{2}}+ q + 1
\end{array}
}, \right.
\
\
\displaystyle
\left.\: \right.
\
\
\displaystyle
\left.{
\begin{array}{@{}l}
\displaystyle
{{q}^{16}}+{{q}^{15}}+{{q}^{14}}+{2 \ {{q}^{13}}}+{3 \ {{q}^{1
2}}}+{3 \ {{q}^{11}}}+{3 \ {{q}^{10}}}+{3 \ {{q}^{9}}}+
\
\
\displaystyle
{3 \ {{q}^{8}}}+{3 \ {{q}^{7}}}+{3 \ {{q}^{6}}}+{2 \ {{q}^{5}}}+{2 \ {{q}^{4}}}+{{q}^{3}}+{{q}^{2}}+ q + 1
\end{array}
}\right]
\end{array}
\end{equation*}
Type: List(Polynomial(Integer))
fricas )set output tex off
fricas )set output algebra on
guessPRec(q)(l,[])
n
(2) [[f(n): q f(n)q - f(n + 2) + f(n + 1)= 0,f(0)= 1,f(1)= 1]]
Type: List(Expression(Integer))
This causes error::
fricas )set output tex on
fricas )set output algebra off
guessPRec(q)(l,[])
\begin{equation*}
\label{eq2}\begin{array}{@{}l}
\displaystyle
\left[ \left[{{{f \left({n}\right)}\mbox{\rm :}}{{{q \ {f \left({n}\right)}\ {{q}^{n}}}-{f \left({n + 2}\right)}+{f \left({n + 1}\right)}}= 0}}, \:{{f \left({0}\right)}= 1}, \: \right.
\
\
\displaystyle
\left.{{f \left({1}\right)}= 1}\right] \right]
\end{array}
\end{equation*}
Type: List(Expression(Integer))
Some or all expressions may not have rendered properly,
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Missing \right. inserted.
<inserted text>
\right .
l.170 \ Extra \right.
l.173 ....{{f \left({1}\right)}= 1}\right] \right]
[2] (./2782152804449774506-16.0px.aux) )
(see the transcript file for additional information)
Output written on 2782152804449774506-16.0px.dvi (2 pages, 2624 bytes).
Transcript written on 2782152804449774506-16.0px.log.
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